{
  "id": "1503.05848",
  "version": "v1",
  "published": "2015-03-19T17:23:32.000Z",
  "updated": "2015-03-19T17:23:32.000Z",
  "title": "Frequency-dependent magneto-optics and the role of the flat band for massless Kane fermions",
  "authors": [
    "John D. Malcolm",
    "Elisabeth J. Nicol"
  ],
  "comment": "Submitted to Physical Review B on March 18, 2015. 5 pages, 4 figures",
  "categories": [
    "cond-mat.mes-hall",
    "cond-mat.mtrl-sci",
    "cond-mat.str-el"
  ],
  "abstract": "HgCdTe at a critical cadmium doping exhibits a bulk dispersion which includes two linear cones meeting at a single point at zero energy, intersecting a nearly flat band, similar in dispersion to the pseudospin-1 Dirac-Weyl system. In the presence of a finite magnetic field, these bands condense into highly degenerate Landau levels. We have numerically calculated the frequency-dependent magneto-optical and zero-field conductivity of this material using the Kane model in the Kubo formula. Found in this spectrum is a signature of the flat band. These calculations are compared to recent experimental measurements, showing good agreement [M. Orlita et al., Nat. Phys. 10, 233 (2014)]. Discussions are also made in broader comparisons to the Dirac-Weyl system.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2015-03-19T17:23:32.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "flat band",
      "massless kane fermions",
      "frequency-dependent magneto-optics",
      "dirac-weyl system",
      "finite magnetic field"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 5,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}